Have 2004 V-8 Touareg. Can the transmission shift points be reprogrammed to shift at lower rpm's at slower speeds, currently it will not shift until 2,700 to 3,000 rpms. This feel very high under slow to even moderate acceleration.

You can go through the ecm and reconfigure the trans control module,however there could be an underlying reason for you high shift points. it could be that you have a faulty engine speed sensor which sends the signal to the ecm to operate your transmission. my advice would be to check for any loose connections first. also your shift points are set to the power curve of your engine so if your having to throttle it to a higher degree it could be that the performance of your engine is not what it should be. if you can give me some more background on your vehicle i can evalueate it further

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Follow cable/linkage from throttle body to transmission for kickdown and make sure it is well lubricated and moving freely at all points, especially at transmission . Patially seized or stuck will cause it to hang up like you are accelerating and trying to pass.

It stands for "Sport" and Comfort", it changes the way the transmission shifts. Read a more detailed description below.

In C, the transmission starts from a stop in 2nd gear unless the kick down switch is activated (pedal to floor from standing start). The transmission will shift at lower RPM's. This is used for everyday driving. The S mode will cause the transmission to start in 1st gear regardless of pedal position and shift at higher rpm. This button has NO effect on suspension, Mercedes have separate suspension control switches.
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Transmission sensor.your gear ratio was not set up properly..Its supposed to be mapped out soo the tranny shifts at a neutral rpm(around 2500-3400 rpm) its punching into gear correct?could have been a rebuilt tranny in which case they just replace the current problem..Or it could be a flywheel.1st thing to get done is to change the transmission fluid and filter.Goto midas or somewhere like they and they call it a flush and fill and it costs around $160 which is best case scenario.

I am having trouble understanding what you are saying but it sounds like you are saying the transmission shift points are too high. (Holds the gears too long, RPM's too high before it shifts) RIght? Check to see if you have vacuum to the modulator at Idle. If yes replace the modualtor.

You can "tighten - up" the shift points by installing a chip or aftermarket exaust, even B&M sells a simple solution for slipping transmissions in a bottle. Otherwise not without a rebuild and or reprogramming.

When the car is just cruising along at approx.50+ MPH push the O/D button. You should feel the gears change higher and if you have an RPM guage then it should drop as well to fewer RPMs. This would be normal driving conditions. O/D will not kick in until the last regular gear (3rd or 4th depending on model) had been shifted into. O/D automatically kicks out when slowing down and the transmission shifts to a lower gear. Thus the O/D has no function at slower speeds/gears and does not need to be shifted ( on or off ) except in the very first example given here.

To simply answer the question, yes, having your windows/sunroof open
reduces your vehicles overall speed due to drag that's not factored
into wind tunnel testing when it's designed.

If your vehicle is detecting a slip condition, your shifting too high
or low, causing clutch slip as opposed to a solid engagement. This
occurs in any vehicle with a clutch; you need to shift precisely.
Margin of error on a shift point is not a few hundred RPM's, it's less
than 100.